Hydrogen

total heat\n1H\n-\nâ†'\nH\nâ†"\nLi\n\n half-yearly table\n\n- ← atomic number 1 â†' helium\n\nAppearance\ncolorless shooter\n\nPurple glow in its plasma state\n\n spiritual lines of atomic number 1\nGeneral properties\nName, symbolic representation, mo hydrogen, H, 1\nPronunciation /ˈhaɪdrÉ™dÊ'É™n/ HY-drÉ™-jÉ™n[1]\n constituent category nonmetal\nGroup, period, farce 1, 1, s\nStandard nuclear pack 1.008(1)\nElectron constellation 1s1\n1\n\nHistory\n find Henry Cavendish[2][3] (1766)\nNamed by Antoine Lavoisier[4] (1783)\n animal(prenominal) properties\nColor colorless\n physique gas\nDensity (0 °C, 101.325 kPa)\n0.08988 g/L\nLiquid tightfistedness at m.p. 0.07 (0.0763 solid)[5] g·cmâˆ'3\nLiquid tautness at b.p. 0.07099 g·cmâˆ'3\nMelting rase 14.01 K, -259.14 °C, -434.45 °F\nBoiling microscope stage 20.28 K, -252.87 °C, -423.17 °F\nTriple tip 13.8033 K (-259°C), 7.042 kPa\nCritical vertex 32.97 K, 1.293 MPa\nHeat of fusion (H2) 0.117 kJ·bulwarkâˆ'1\ nHeat of dehydration (H2) 0.904 kJ·molâˆ'1\n poor boy heat capacity (H2) 28.836 J·molâˆ'1·Kâˆ'1\nVapor pull\nP (Pa) 1 10 nose behinddy 1 k 10 k 100 k\nat T (K) 15 20\n\n atomic properties\nOxidation states 1, -1\n(amphoteric oxide)\nElectronegativity 2.20 (Pauling scale)\nionisation energies 1st: 1312.0 kJ·molâˆ'1\nCovalent radius 31±5 pm\n caravan der Waals radius 120 pm\nMiscellanea\nCrystal organise hexagonal\nMagnetic rules of order diamagnetic[6]\nThermal conductivity 0.1805 W·mâˆ'1·Kâˆ'1\nSpeed of dependable (gas, 27 °C) 1310 m·sâˆ'1\nCAS registry trope 1333-74-0\nMost static isotopes\n of import article: Isotopes of hydrogen\niso NA half-life DM DE (MeV) DP\n1H 99.985% 1H is stable with 0 neutrons\n2H 0.015% 2H is stable with 1 neutron\n3H trace 12.32 y βâˆ' 0.01861 3He\n\nv ·t ·e· r\n\n hydrogen is a chemical substance element with symbol H and atomic mo 1. With an average atomic weight of 1.00794 u (1.007825 u for hydrogen-1), hydrogen is the lightest element and its monatomic hurl (H1) is the most abundant chemical substance, constituting roughly 75% of the Universes baryonic mass.[7] Non-remnant stars atomic number 18 mainly composed of hydrogen in its plasma state.\n\nAt standard temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, highly combustible diatomic gas with the molecular ordinance H2. Naturally occurring atomic hydrogen is rare on humankind because hydrogen readily forms covalent compounds with most elements and is present in the water molecule and in most organic compounds. Hydrogen plays a particularly in-chief(postnominal) role in acid-base interpersonal chemistry with many reactions exchanging protons between disintegrable molecules.\n\nIn ionic compounds, it can take a oppose charge (an anion known as a hydride and written as Hâˆ'), or as a positively charged...If you compulsion to get a broad essay, order it on our website:

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